Elements Compounds And Mixtures Topjc 2

Question 1

What is the definition of an element

Answer 1

Elements are materials made up of only one type of atom and cannot be broken down into anything simpler by chemical means they contain 1 atom

Question 2

Metals

Answer 2

Metals are hard, conduct electricity and heat, high density, high lusture, malleable and have a high melting point

Question 3

Malleable

Answer 3

Can be hammered into shape

Question 4

Ductile

Answer 4

Can be drawn into wires

Question 5

Non-metals

Answer 5

Are brittle, do not conduct electricity and they are gas or liquid or solid at room temperature

Question 6

What is a compound

Answer 6

A compound is made up of two or more atoms chemically joined together. Their properties are VERY DIFFERENT to the elements they are made up of

Question 7

Mixtures

Answer 7

A mixture is usually two or more substances mixed together which are usually easy to separate

Question 8

Atom

Answer 8

The simplest particle of an element that can exist on its own in a state of environment

Question 9

What happens when iron and sulfur are out together

Answer 9

Iron + sulfur -> iron sulphate glows

Question 10

What happens when u add magnesium + oxygen

Answer 10

Magnesium + oxygen -> magnesium oxide = bright white light